Meet Tylos: a gas giant 900 light years away and with a climate never seen before on any planet known to scientists.

Dramatic scene on a beach in the Chinese province of Hainan: a little girl was drifting in the waves and was in danger of drowning. A young man took heart and became a hero.

The $488 million observatory is set to launch at the end of this month on a two-year mission to map the entire celestial sky.

"An X-37B onboard camera, used to ensure the health and safety of the vehicle, captures an image of Earth while conducting ...

NASA has explored the space beyond Earth and our solar system with spacecraft like Voyagers 1 and 2, and how we’ve discovered ...

This updated version of "the Pale Blue Dot," made for the photo's 30th anniversary in 2020, uses modern image-processing software and techniques to ...